Daikin EPRA18DAW1 Installer's Reference Manual page 40

5 | Application guidelines
Installer reference guide
40
The power or current of the entire Daikin system is limited dynamically by digital
inputs (maximum four steps). Each power limitation level is set via the user
interface by limiting one of the following:
▪ Current (in A)
▪ Power input (in kW)
The energy management system (field supply) decides the activation of a certain
power limitation level. Example: To limit the maximum power of the entire house
(lighting, domestic appliances, space heating...).
C
a
5
4
3
A8P
2
1
b
A B
A Outdoor unit
B Indoor unit
C Energy management system
a Power limitation activation (4 digital inputs
b Backup heater
P
i
a
DI1
DI3
DI4
P Power input
i
t Time
DI Digital inputs (power limitation levels)
a Power limitation active
b Actual power input
Setup
▪ Demand PCB (option EKRP1AHTA) needed.
▪ Maximum four digital inputs are used to activate the corresponding power
limitation level:
- DI1 = strongest limitation (lowest energy consumption)
- DI4 = weakest limitation (highest energy consumption)
▪ Specification of the digital inputs:
DI 1 S9S
DI 2 S8S
DI 3 S7S
DI 4 S6S
▪ Refer to the wiring diagram for more information.
Configuration
▪ Set the power consumption control settings in [9.9] via the user interface (for the
description of all settings, see
- Select limitation by digital inputs.
- Select the type of limitation (power in kW or current in A).
- Set the desired power limitation level corresponding to each digital input.
b
t
limit 1
limit 2
limit 3
limit 4
"Power consumption
4
control" [ 175]):
EPRA14~18DAV3+W1 + ETVZ16S18+23DA6V+9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01